Kelvin-Helmholtz instabilities occurring at a nacelle exhaust

Julien Manera, Benoît Schiltz, Romain Leneveu, Stéphane Caro, Jonathan Jacqmot, Sjoerd Rienstra

Onderzoeksoutput: Hoofdstuk in Boek/Rapport/CongresprocedureConferentiebijdrageAcademicpeer review

21 Citaten (Scopus)
2 Downloads (Pure)

Samenvatting

The difference of flow velocity between the free stream and the jet stream at a nacelle exhaust generates a shear layer where some hydrodynamic instabilities, called Kelvin-Helmholtz instabilities, can occur. Some instabilities occur in the shear layer in the computations with Actran/DGM a time domain code which solves the LEE equations (see,1,2 and3) but it is often difficult to conclude whether they are physical or not. This document recalls the theory on the Kelvin-Helmholtz instabilities and gives guidelines to sort out the physical and numerical instabilities. This methodology is put into practice on concrete cases studied in the frame of the TURNEX project.

Originele taal-2Engels
Titel14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)
Plaats van productieReston
UitgeverijAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Aantal pagina's18
ISBN van geprinte versie9781563479397
DOI's
StatusGepubliceerd - 1 dec 2008
Evenement14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference) - Vancouver, BC, Canada
Duur: 5 mei 20087 mei 2008

Congres

Congres14th AIAA/CEAS Aeroacoustics Conference (29th AIAA Aeroacoustics Conference)
LandCanada
StadVancouver, BC
Periode5/05/087/05/08

Vingerafdruk Duik in de onderzoeksthema's van 'Kelvin-Helmholtz instabilities occurring at a nacelle exhaust'. Samen vormen ze een unieke vingerafdruk.

Citeer dit